Yep I should have written "mostly browser/SSH". But then occasionally I have to print something or run a (customer-provided) VPN client or open some corporate Excel file, etc. And there's the convenience factor of keeping my current setup. But should the MacOS thing become untenable for some reason, yep next step would be a Lenovo/System76 laptop known to work with Linux (including audio/bluetooth/wifi after resuming from sleep!) or even a Chromebook...
P.S. I've ran Linux/X (plus VMWare VMs with Windows) on my desktop machine with few complaints since the '90s and it was always the laptops that had issues, causing me to switch back to Windows after a couple of weeks of trial & frustration in the 2000s. I got Windows pretty performant & usable though, even attended Mark Russinovich'es Windows Internals class in London back in 2006 or so :-)
Laptop issues have dropped markedly in the last 3~4 years; especially battery life on AMDs in the last 6~12 months, the kernel perf / scheduling changes have been pretty good.
P.S. I've ran Linux/X (plus VMWare VMs with Windows) on my desktop machine with few complaints since the '90s and it was always the laptops that had issues, causing me to switch back to Windows after a couple of weeks of trial & frustration in the 2000s. I got Windows pretty performant & usable though, even attended Mark Russinovich'es Windows Internals class in London back in 2006 or so :-)